YALL PLEASE PLEASE HELP IF YOU KNOE THE ANSWER TO BOTH OF THEM IT WILL BE VERY NICE PLEASE HELP
1 answer:
Answer:
2.5m/s²
Force = mass x acceleration
Explanation:
Given parameters
Mass = 200kg
Force = 500N
Unknown:
Acceleration = ?
Solution:
According to the Newton's second law of motion "the constant force applied on a massive body causes it to accelerate".
Mathematically;
Force = mass x acceleration
Now insert the parameters and solve;
Acceleration =
Acceleration = = 2.5m/s²
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Answer:
fr = ½ m v₀²/x
Explanation:
This exercise the body must be on a ramp so that a component of the weight is counteracted by the friction force.
The best way to solve this exercise is to use the energy work theorem
W = ΔK
Where work is defined as the product of force by distance
W = fr x cos 180
The angle is because the friction force opposes the movement
Δk = –K₀
ΔK = 0 - ½ m v₀²
We substitute
- fr x = - ½ m v₀²
fr = ½ m v₀²/x
Answer:
The amount of mass that needs to be converted to release that amount of energy is
Explanation:
From Albert Einstein's Energy equation, we can understand that mass can get converted to energy, using the formula
where = change in mass
c = speed of light =
Making m the subject of the formula, we can find the change in mass to be
There fore, the amount of mass that needs to be converted to release that amount of energy is 1.122 X 10 ^-7 kg